Features:Operating Current: Standby current (all relays closed) 14MA, 1 relay open 41MA, 2 relays open 69MA, 3 relays open 96MA, 4 relays open 123MA, 5 relays open 150MA, 6 relays open 177MA, 7 relays open 203MA, 8 relays open 229MA, 16 relays open 480MA.Send commands via Android "Bluetooth APP" control relay turned on and off.Momentary, Self-locking, Interlock, Open, Close, 5 Commands.Maxmium remote distance is up to 10 meter.Only suitable for android phones with Bluetooth functions.Specifications:Bluetooth version: 2.1Bluetooth password: 1234 Control mode: Phone bluetooth / Relay switchControl port: 16 switches with normally open and close functionsRemote distance: Approx. 6-10meter(Different actual circumstances has different distance)Size: Approx. 175 x 65 x 18mm / 6.88 x 2.55 x 0.7inchQuantity: 1pcWeight: 225gNote: This Bluetooth Relay is ONLY suitable for Android phones with Bluetooth functions, NOT suitable for iPhones.Please contact us for instruction.Package Included:1 x 16 Channel Bluetooth Relay